Open Access
Subscription Access
Effects of Reinforced Concrete Beams with Transverse Square Opening in beam
Abstract
Transverse openings in reinforced concrete beams use to house the utility services like electricity cable, Internet cable, air-conditioning pipe, fire safety pipe line and water-drainage system. These beams opening pipe line system are usually placed underneath the soffit of the beam in term of dead space. This height of dead space that increase the overall building height. Beam opening in the reinforced concrete beams significantly decreases the ultimate load carrying capacity of beam. Transverse beam opening in the web portion of beam produces discontinuities in the usual flow of stresses and that leading stress concentration around the opening region.
This paper presents a study aimed at investigating the influence of Reinforced concrete beam with different size square opening at flexure and shear location. A nonlinear finite element analysis was conducted to investigate the effects of different size openings, in terms of ultimate load carrying capacity, Elemental Stresses, load-deflection plot, crack pattern. The work involves investigating performance of different size of small and large square opening.
References
B. Aykac, I. Kalkan, S. Aykac, and Y. E. Egriboz, ‘Flexural behavior of RC beams with regular square or circular web openings’, Eng Struct, vol. 56, pp. 2165–2174, Nov. 2013, doi: 10.1016/j.engstruct.2013.08.043.
H. A. Abdalla, A. M. Torkey, H. A. Haggag, and A. F. Abu-Amira, ‘Design against cracking at openings in reinforced concrete beams strengthened with composite sheets’, Compos Struct, vol. 60, no. 2, pp. 197–204, 2003, doi: 10.1016/S0263-8223(02)00305-7.
M. A. Mansur, ‘Effect of Openings on the Behaviour and Strength of R/C Beams in Shear’, 1998.
D. N. Jabbar, A. Al-Rifaie, A. M. Hussein, A. A. Shubbar, M. S. Nasr, and Z. S. Al-Khafaji, ‘Shear behaviour of reinforced concrete beams with small web openings’, in Materials Today: Proceedings, Elsevier Ltd, 2021, pp. 2713–2716. doi:10.1016/j.matpr.2020.12.710.
S. Ahmed Al-sheikh, ‘flexural behavior of rc beams with opening’, 2014. [Online]. Available: www.crl.issres.net
J. V. Amiri and M. Hosseinalibygie, ‘Effect of small circular opening on the shear and flextural behavior and ultimate strength of reinforced concrete beams using normal and high strength concrete’.
G. Vasudevan and S. Kothandaraman, ‘Experimental investigation on the performance of RC beams strengthened with external bars at soffit’, Materials and Structures/Materiaux et Constructions, vol. 47, no. 10, pp. 1617–1631, 2014, doi: 10.1617/s11527-013-0141-2.
Pandimani, Y. D. Rao, and I. G. Krishna, ‘FE modeling for ultimate behavior predictions of RC beam’, Asian Journal of Civil Engineering, vol. 25, no. 1, pp. 477–493, Jan. 2024, doi: 10.1007/s42107-023-00789-w.
M. Elkafrawy, A. Nabil, and N. Meleka, ‘A State-of-the-Art-Review on Reinforced Concrete Beams with Web Openings’, Civil Eng, vol. 46, no. 1, p. 119, 2023, [Online]. Available: https://erjm.journals.ekb.eg